A series of explosions have erupted from a building on fire in Derby.
A number of bangs were heard across the city shortly before 14:00 BST and large, black plumes of smoke were visible for miles.
Main line train services have been suspended and residents are being advised to stay indoors.
Police said the blaze, at a commercial building in Enterprise Way, is not thought to be suspicious. No injuries have been reported.
Road closures were initially in place at Prime Park Way and Stores Road to the junction with the Vauxhall garage, and Mansfield Road to the junction with Alfreton Road.
Nearby St Mary’s Wharf police station has been evacuated.
Smoke lessened after an hour but the cordoned was expanded for “people’s safety”.